I noticed there are many gdfs files for every phone at Top Sony Forums. However, I keep reading that you should only use the one that came with your phone. I believe my gdfs is corrupted since I keep getting failed at flashblock 47 with every FS file I try for my w810i. I never saved my gdfs before I got the WSOD. Is there a way to repair your gdfs or is my only hope to try one of the ones for my phone and hope for the best?